I took a quick peak at that Boruto chapter
Saw the bit about that mask dude entering Konoha and the woman with him talked about how Konoha has something that detects chakra that's been there before. That's pretty interesting. I guess this dude really is Jiraiya as I've seen hear and there. But then how does that work? Is it tech or is it actual people sensing chakra? (sorry if it was said, like I said, quick peak and it was hours ago lol) Cause if it's tech then that's been around for longer than I would've expected. Though they already had TVs and stuff in Part 1 so it's not unreasonable.